Komatsu PC88MR-10 Shop Manual page 140

10 Structure and function
Control valve
PT: From pump merge-divider selector solenoid valve
PMAX: Pump pressure sensor mounting port
TB: To tank via bypass check valve
TC: To tank via bypass check valve
TS: To tank
TSW: To swing motor
1. Block
2. Blade valve
3. Swing valve
4. L.H. travel valve
5. R.H. travel valve
6. Boom swing valve
7. Merge-divider valve block
8. Boom valve
9. Arm valve
10. Bucket valve
11. Service 1 valve
12. Cover
13. LS check valve
14. Travel junction valve + LS check valve
15. Boom hydraulic drift prevention valve
16. Cooler bypass valve
17. Equalizer valve
18. Self-pressure reducing valve
10-62 PC88MR-10